//
//  AppDelegate.swift
//  sinaWeibo
//
//  Created by 浅爱 on 16/3/9.
//  Copyright © 2016年 y. All rights reserved.
//

import UIKit

@UIApplicationMain

class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        
        // 设置全局颜色
        // 在控件实例化之前设置
        themeColorSetting()
        
        // 注册通知
        registerNotification()

        // 手动实例化window
        window = UIWindow(frame: UIScreen .mainScreen().bounds)
        
        window?.backgroundColor = UIColor.whiteColor()
        
        // 设置根视图控制器并显示
        defaultRootViewController()
        
        window?.makeKeyAndVisible()
        
        
        return true
        
    }
    
    
    @objc private func changeRootVC(notification: NSNotification) {
    
//        let object = notification.object
        // 如果object 不为nil(oauth)  根视图控制器为 welcomeVC
        // 如果object 为nil 根视图控制器为 MainVC
        window?.rootViewController = (notification.object == nil) ? MainViewController() : WelcomeViewController()
    
    }
    
    // 注册通知
    private func registerNotification() {
    
        // 注册通知
        // object： 关注谁发出的通知，如果为nil 就是所有对象发出的通知都可以接收
        // 通知(object 不为nil 表示是通知)   广播(object 为nil)
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "changeRootVC:", name: switchRootViewController, object: nil)
    
    }
    
  
    
    // 设置根视图控制器
    // 登录->欢迎页面  未登录->访客页面
    private func defaultRootViewController() {
    
        let rootVC = userAccount.sharedAccount.userLogin ? WelcomeViewController() : MainViewController()
        
        window?.rootViewController = rootVC
    
    }
    
    // 设置主题色
    private func themeColorSetting() {
        
        UINavigationBar.appearance().tintColor = themeColor
        
        UITabBar.appearance().tintColor = themeColor
        
    }

    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }

    
    
    // 移除通知(程序退出时候运行  编码习惯)
    deinit {
        
        NSNotificationCenter.defaultCenter().removeObserver(self)
        
    }
    

}

